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Stress and strain monitoring in metals and alloys by guided acoustic waves with the aid of anharmonic effects and stress stiffening

The basic theoretical features including anharmonic effects allowing structural health monitoring and the detection of stress and strain by guided acoustic waves are exemplified. Experimental results for stress and strain monitoring covering the linear elastic regime and the regime of plastic deform...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2015-09, Vol.138 (3_Supplement), p.1835-1835
Main Authors: Grill, Julian, Grill, Wolfgang
Format: Article
Language:English
Online Access:Get full text
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Summary:The basic theoretical features including anharmonic effects allowing structural health monitoring and the detection of stress and strain by guided acoustic waves are exemplified. Experimental results for stress and strain monitoring covering the linear elastic regime and the regime of plastic deformation are demonstrated for brass, copper and a standard aluminum alloy. Practically oriented applications, including also the monitoring of structural defects, load, weakening of structural components by overload and vibrations, and the detection of temperature to compensate for temperature dependent effects influencing structural health monitoring by acoustic waves, are presented for applications involving sections and components of aircrafts.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.4933838